Wherever you are - be all there.
Without hard work, nothing grows but weeds.
Be gentle to all and stern with yourself.
What you do today can improve all your tomorrows.
Do not weep do not wax indignant. Understand.
The secret of getting ahead is getting started.
Things do not happen. Things are made to happen.
Be kind whenever possible. It is always possible.
Never complain and never explain.
Quality is not an act, it is a habit.
I have taught history on the high school and college levels, and am or have been a lecturer at the Smithsonian, The National Institutes of Health, and numerous colleges and universities, mostly on science fiction and technology subjects.